Effective computer aided design (CAD) systems for woven fabrics provided fabric simulations over a wide range of yarn counts and densities. Such systems print simulations in the required density and count to more closely resemble the fabrics. Printing graph functions include peg plan, drafting, denting, and weaving; graphs with different colors to represent different layers or weaves; and adjustable grid size to accommodate different paper types. Pixel by pixel control and control of yarn by yarn movement facilitate the drawing of fillingwise and warpwise striped dobby fabrics. Some systems provide automatic stripe generation that accounts for the weight of each yarn type. An overview of CAD tools discusses checked fabrics, combination weaves, fancy yarns, jacquard fabrics, printed fabrics, color tools, and three dimensional fabric display. 11 refs.